You sound a bit like a pedant, joining a project that's halfway, who wants everyone else to redo all their work from scratch, because it doesn't follow your own

You sound a bit like a pedant, joining a project that's halfway, who wants everyone else to redo all their work from scratch, because it doesn't follow your own preferred academic practices, which you believe are the only right way to do things. Did your presence in the team increase productivity, or did you primarily drain your teammates time to enforce your ideals? If the latter, then leave. You can't force others to work the way you want things done. Nobody likes the guy on the team who believes he knows everything better. But you could've tried to inspire them instead. Leaving is fine.